time (YEARS)	0	1	2	3	4	5	6	7
A	-3000	500	500	500	500	500	500	500
B	-10000	2000	5000	3000	2000	-	-	-
C	-15000	5000	4000	4000	5000	10000	-	-
D	-4000	1000	1000	1000	1000	7000	7000	7000
E	-8000	500	500	500	2000	5000	10000	7000

for the above cash flows, calculate the payback and discounted payback (figures are in tshs million)